Topic 9: Integumentary System - Dermis + Hypodermis Flashcards
1
Q
What are the components of dermis? (4)
A
- blood vessels
- nerves
- glands
- hair follicles
2
Q
What are the 2 sublayers of dermis?
A
- Papillary layer
- Reticular layer
3
Q
What type of tissue are the sublayers of dermis made of?
A
- CT from mesoderm
4
Q
What are the tissue characteristics of the papillary layer? (3)
A
- areolar CT
- vascular
- has projection into the epidermis called dermal papillae
5
Q
What does the papillary layer form in thick skin? (2)
A
- epidermal ridges, or fricction ridges
- aka fingerprints to improve grips
6
Q
What does the reticular layer make up?
A
most of the dermis
7
Q
What is the reticular layer composed of, in terms of tissue? (2)
A
- dense irregular CT
- can stretch (ex. stretch marks)
8
Q
Is the hypodermis part of the skin?
A
NO
9
Q
What is the hypodermis known as and composed of? (3)
A
- subcutaneous layer
- superficial facia
- adipose
10
Q
What is fascia?
A
- CT layers that surround and support organs
